scholarly journals Surface plasmon-enhanced zeolite catalysis under light irradiation and its correlation with molecular polarity of reactants

2014 ◽  
Vol 50 (90) ◽  
pp. 13893-13895 ◽  
Author(s):  
Xingguang Zhang ◽  
Aijun Du ◽  
Huaiyong Zhu ◽  
Jianfeng Jia ◽  
Jun Wang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Visible Light Irradiation ◽  
Plasmon Resonance ◽  
Near Field ◽  
Field Enhancement ◽  
Catalytic Performance ◽  
Light Irradiation ◽  
Au Nps ◽  
Zeolite Catalysis

The catalytic performance of zeolites can be boosted by the electric near-field enhancement (ENFE) of plasmonic Au-NPs induced by the localised surface plasmon resonance (LSPR) under visible light irradiation.

Plasmonic resonance enhanced photoelectrochemical aptasensors based on g-C3N4/Bi2MoO6

2018 ◽  
Vol 54 (52) ◽  
pp. 7199-7202 ◽  
Author(s):  
Zhenli Qiu ◽  
Jian Shu ◽  
Dianping Tang
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Visible Light Irradiation ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Light Irradiation ◽  
Localized Surface Plasmon ◽  
Plasmonic Resonance

An in-depth exploration associated with localized surface plasmon resonance between g-C3N4/Bi2MoO6 and gold nanoparticles has been conducted for highly efficient photoelectrochemical aptasensors under ultraviolet and visible light irradiation.

Plasmon-Induced Photodegradation of Toxic Pollutants with Ag/AgI/Bi2WO6 under Visible-Light Irradiation

2013 ◽  
Vol 807-809 ◽  
pp. 1534-1542 ◽  
Author(s):  
Ming Sheng Gui ◽  
Peng Fei Wang ◽  
Miao Miao Tang ◽  
Dong Yuan
Keyword(s):  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Surface Plasmon ◽  
Visible Light Irradiation ◽  
Plasmon Resonance ◽  
Photogenerated Electron ◽  
Light Irradiation ◽  
Ag Nps ◽  
Electron Hole ◽  
Band Position

The Ag/AgI/Bi2WO6photocatalysts were successfully synthesized by deposition-precipitation and photoreduction methods. The catalyst showed high and stable photocatalytic activity for the degradation of the RhB under visible light irradiation (λ>400 nm). On the basis of a new plasmonic photocatalytic mechanism, the photogenerated electron-hole pairs are formed in Ag nanoparticles (NPs) due to surface plasmon resonance under visible-light irradiation. Then, the photoexcited electrons at the Ag NPs are injected into AgI. On the other hand, the band position shows that AgI and Bi2WO6have the matching band potentials in the AgI/Bi2WO6heterostructure composites. So the photoexcited electrons is ultimately transfer to the Bi2WO6conduction band (CB), photo-induced holes (hVB+) is transfer to the AgI valence band (VB) and the simultaneous transfer to compensative electrons from I-to the Ag NPS. This the result indicates that the high photosensitivity of noble metal Ag NPs due to surface plasmon resonance, which is not only improve the photocatalytic performance, but also offer a new idea for preparation of new photocatalysts .

Gold nanoparticle-modified TiO2/SBA-15 nanocomposites as active plasmonic photocatalysts for the selective oxidation of aromatic alcohols

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70352-70363 ◽  
Author(s):  
Yu Chen ◽  
Weizun Li ◽  
Jingyu Wang ◽  
Qian Yang ◽  
Qidong Hou ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Mesoporous Silica ◽  
Gold Nanoparticle ◽  
Selective Oxidation ◽  
Noble Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Catalytic Performance ◽  
Light Irradiation ◽  
Aromatic Alcohols

The catalytic performance of noble-metal on mesoporous silica hosts has been widely investigated because the effects of surface plasmon resonance can open new avenues for the improvement of catalytic performance under light irradiation.

scholarly journals High Near-Field Enhancement in Plasmonic Coupled Nanostructure for Spaser Application

2021 ◽  
Author(s):  
SAQIB JAMIL ◽  
Adnan Daud Khan ◽  
Javed Iqbal ◽  
Waqas Farooq
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Field ◽  
Field Enhancement ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Film Substrate ◽  
Gain Media

Abstract We theoretically demonstrated a kind of plasmon coupled elliptical nanostructure to achieve a vast range of applications based on nanolaser or spaser with high intensity. To overcome the ohmic losses, the plasmon ellipse is composed of the gold film substrate with a gain media. A simple ellipse has been chosen from which variety of dimer configurations have been formed by symmetry alteration technique which are then tested for different light polarizations and gap variations. The proposed model supports localized surface plasmon resonance mode (LSPR). Moreover, the localized surface plasmon resonance (LSPR) property of the proposed nanostructure is numerically analysed by the finite-element method (FEM) and the results shows that the electric field intensity (EFI) can be amplified to a large values by symmetry breaking in the elliptical nanostructure. Various plasmon modes can be excited by selecting the appropriate gain media. In addition to this, a compact tunable multi-wavelength nanolaser (spaser) can be developed by using this model. Giant near field enhancement (NFE) and high LSPR enable this structure to be promising for spaser applications such as surface enhanced Raman spectroscopy, sensing, lithography, imaging, dental applications and much more.

scholarly journals Numerical Study on the Surface Plasmon Resonance Tunability of Spherical and Non-Spherical Core-Shell Dimer Nanostructures

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1728
Author(s):  
Joshua Fernandes ◽  
Sangmo Kang
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Aspect Ratio ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Shell Thickness ◽  
Numerical Study ◽  
Field Enhancement ◽  
Core Shell

The near-field enhancement and localized surface plasmon resonance (LSPR) on the core-shell noble metal nanostructure surfaces are widely studied for various biomedical applications. However, the study of the optical properties of new plasmonic non-spherical nanostructures is less explored. This numerical study quantifies the optical properties of spherical and non-spherical (prolate and oblate) dimer nanostructures by introducing finite element modelling in COMSOL Multiphysics. The surface plasmon resonance peaks of gold nanostructures should be understood and controlled for use in biological applications such as photothermal therapy and drug delivery. In this study, we find that non-spherical prolate and oblate gold dimers give excellent tunability in a wide range of biological windows. The electromagnetic field enhancement and surface plasmon resonance peak can be tuned by varying the aspect ratio of non-spherical nanostructures, the refractive index of the surrounding medium, shell thickness, and the distance of separation between nanostructures. The absorption spectra exhibit considerably greater dependency on the aspect ratio and refractive index than the shell thickness and separation distance. These results may be essential for applying the spherical and non-spherical nanostructures to various absorption-based applications.

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